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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_001_014_681">&nbsp;</a>NAME</h4><blockquote>
fg - run jobs in the foreground
</blockquote><h4><a name = "tag_001_014_682">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

fg <b>[</b><i>job_id</i><b>]</b>
</code>
</pre>
</blockquote><h4><a name = "tag_001_014_683">&nbsp;</a>DESCRIPTION</h4><blockquote>
If job control is enabled (see the description of
<i>set</i>
<b>-m</b>),
the
<i>fg</i>
utility will move a background job
from the current environment (see
<xref href=shexenv><a href="chap2.html#tag_001_012">
Shell Execution Environment
</a></xref>)
into the foreground.
<p>
Using
<i>fg</i>
to place a job into the foreground will remove its process ID
from the list of those &quot;known in the current shell execution environment&quot;;
see
<xref href=asyncl><a href="chap2.html#tag_001_009_003">
Lists
</a></xref>.
</blockquote><h4><a name = "tag_001_014_684">&nbsp;</a>OPTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_685">&nbsp;</a>OPERANDS</h4><blockquote>
The following operand is supported:
<dl compact>

<dt><i>job_id</i><dd>Specify the job to be run as a foreground job.
If no
<i>job_id</i>
operand is given,
the
<i>job_id</i>
for the job that was most
recently suspended, placed in the background or run as a background job
will be used.
The format of
<i>job_id</i>
is described in the entry for
<b>job control job ID</b>
in
the <b>XBD</b> specification, <a href="../xbd/glossary.html"><b>Glossary</b>&nbsp;</a> .

</dl>
</blockquote><h4><a name = "tag_001_014_686">&nbsp;</a>STDIN</h4><blockquote>
Not used.
</blockquote><h4><a name = "tag_001_014_687">&nbsp;</a>INPUT FILES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_688">&nbsp;</a>ENVIRONMENT VARIABLES</h4><blockquote>
The following environment variables affect the execution of
<i>fg</i>:
<dl compact>

<dt><i>LANG</i><dd>Provide a default value for the internationalisation variables
that are unset or null.
If
<i>LANG</i>
is unset or null, the corresponding value from the
implementation-dependent default locale will be used.
If any of the internationalisation variables contains an invalid setting, the
utility will behave as if none of the variables had been defined.

<dt><i>LC_ALL</i><dd>
If set to a non-empty string value,
override the values of all the other internationalisation variables.

<dt><i>LC_CTYPE</i><dd>
Determine the
locale for the interpretation of sequences of bytes of text data as
characters (for example, single- as opposed to multi-byte characters
in arguments).

<dt><i>LC_MESSAGES</i><dd>
Determine the locale that should be used to affect
the format and contents of diagnostic
messages written to standard error.

<dt><i>NLSPATH</i><dd>
Determine the location of message catalogues
for the processing of
<i>LC_MESSAGES .
</i>
</dl>
</blockquote><h4><a name = "tag_001_014_689">&nbsp;</a>ASYNCHRONOUS EVENTS</h4><blockquote>
Default.
</blockquote><h4><a name = "tag_001_014_690">&nbsp;</a>STDOUT</h4><blockquote>
The
<i>fg</i>
utility writes the command line of the job to standard output
in the following format:
<p><code>
<tt>"%s\n"</tt>, &lt;<i>command</i>&gt;
</code>
<p>
</blockquote><h4><a name = "tag_001_014_691">&nbsp;</a>STDERR</h4><blockquote>
Used only for diagnostic messages.
</blockquote><h4><a name = "tag_001_014_692">&nbsp;</a>OUTPUT FILES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_693">&nbsp;</a>EXTENDED DESCRIPTION</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_694">&nbsp;</a>EXIT STATUS</h4><blockquote>
The following exit values are returned:
<dl compact>

<dt>0<dd>Successful completion.

<dt>&gt;0<dd>An error occurred.

</dl>
</blockquote><h4><a name = "tag_001_014_695">&nbsp;</a>CONSEQUENCES OF ERRORS</h4><blockquote>
If job control is disabled, the
<i>fg</i>
utility will exit with an error
and no job will be placed in the foreground.
</blockquote><h4><a name = "tag_001_014_696">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
The
<i>fg</i>
utility will not work as expected when it
is operating in its own utility execution environment
because that environment will have no applicable jobs
to manipulate.
See the APPLICATION USAGE section for
<i><a href="bg.html">bg</a></i>.
For this reason,
<i>fg</i>
is generally implemented as a shell regular built-in.
</blockquote><h4><a name = "tag_001_014_697">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_698">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_001_014_699">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="bg.html">bg</a></i>,
<i><a href="kill.html">kill</a></i>,
<i><a href="jobs.html">jobs</a></i>,
<i><a href="wait.html">wait</a></i>.
</blockquote><hr size=2 noshade>
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]

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